Application of Variational Method to Stability Analysis of Cantilever Vertical Plates with Bimodular Effect
In the design of cantilevered balconies of buildings, many stability problems exist concerning vertical plates, in which reaching a critical load plays an important role during the stability analysis of the plate. At the same time, the concrete forming vertical plate, as a typical brittle material,...
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MDPI AG
2021-10-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/20/6129 |
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| author | Xuan-Yi Xue Da-Wei Du Jun-Yi Sun Xiao-Ting He |
| author_facet | Xuan-Yi Xue Da-Wei Du Jun-Yi Sun Xiao-Ting He |
| author_sort | Xuan-Yi Xue |
| collection | DOAJ |
| description | In the design of cantilevered balconies of buildings, many stability problems exist concerning vertical plates, in which reaching a critical load plays an important role during the stability analysis of the plate. At the same time, the concrete forming vertical plate, as a typical brittle material, has larger compressive strength but lower tensile strength, which means the tensile and compression properties of concrete are different. However, due to the complexities of such analyses, this difference has not been considered. In this study, the variational method is used to analyze stability problems of cantilever vertical plates with bimodular effect, in which different loading conditions and plate shapes are also taken into account. For the effective implementation of a variational method, the bending strain energy based on bimodular theory is established first, and critical loads of four stability problems are obtained. The results indicate that the bimodular effect, as well as different loading types and plate shapes, have influences on the final critical loads, resulting in varying degrees of buckling. In particular, if the average value of the tensile modulus and compressive modulus remain unchanged, the introduction of the bimodular effect will weaken, to some extent, the bending stiffness of the plate. Among the four stability problems, a rectangular plate with its top and bottom loaded is most likely to buckle; next is a rectangular plate with its top loaded, followed by a triangular plate with its bottom loaded. A rectangular plate with its bottom loaded is least likely to buckle. This work may serve as a theoretical reference for the refined analysis of vertical plates. Plates are made of concrete or similar material whose bimodular effect is relatively obvious and cannot be ignored arbitrarily; otherwise the greater inaccuracies will be encountered in building designs. |
| first_indexed | 2024-03-10T06:26:26Z |
| format | Article |
| id | doaj.art-e684734dc1284b32b3f590bd82f96269 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T06:26:26Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-e684734dc1284b32b3f590bd82f962692023-11-22T18:59:28ZengMDPI AGMaterials1996-19442021-10-011420612910.3390/ma14206129Application of Variational Method to Stability Analysis of Cantilever Vertical Plates with Bimodular EffectXuan-Yi Xue0Da-Wei Du1Jun-Yi Sun2Xiao-Ting He3School of Civil Engineering, Chongqing University, Chongqing 400045, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, ChinaIn the design of cantilevered balconies of buildings, many stability problems exist concerning vertical plates, in which reaching a critical load plays an important role during the stability analysis of the plate. At the same time, the concrete forming vertical plate, as a typical brittle material, has larger compressive strength but lower tensile strength, which means the tensile and compression properties of concrete are different. However, due to the complexities of such analyses, this difference has not been considered. In this study, the variational method is used to analyze stability problems of cantilever vertical plates with bimodular effect, in which different loading conditions and plate shapes are also taken into account. For the effective implementation of a variational method, the bending strain energy based on bimodular theory is established first, and critical loads of four stability problems are obtained. The results indicate that the bimodular effect, as well as different loading types and plate shapes, have influences on the final critical loads, resulting in varying degrees of buckling. In particular, if the average value of the tensile modulus and compressive modulus remain unchanged, the introduction of the bimodular effect will weaken, to some extent, the bending stiffness of the plate. Among the four stability problems, a rectangular plate with its top and bottom loaded is most likely to buckle; next is a rectangular plate with its top loaded, followed by a triangular plate with its bottom loaded. A rectangular plate with its bottom loaded is least likely to buckle. This work may serve as a theoretical reference for the refined analysis of vertical plates. Plates are made of concrete or similar material whose bimodular effect is relatively obvious and cannot be ignored arbitrarily; otherwise the greater inaccuracies will be encountered in building designs.https://www.mdpi.com/1996-1944/14/20/6129variational methodstability analysiscantilever vertical platebimodular effectcritical load |
| spellingShingle | Xuan-Yi Xue Da-Wei Du Jun-Yi Sun Xiao-Ting He Application of Variational Method to Stability Analysis of Cantilever Vertical Plates with Bimodular Effect Materials variational method stability analysis cantilever vertical plate bimodular effect critical load |
| title | Application of Variational Method to Stability Analysis of Cantilever Vertical Plates with Bimodular Effect |
| title_full | Application of Variational Method to Stability Analysis of Cantilever Vertical Plates with Bimodular Effect |
| title_fullStr | Application of Variational Method to Stability Analysis of Cantilever Vertical Plates with Bimodular Effect |
| title_full_unstemmed | Application of Variational Method to Stability Analysis of Cantilever Vertical Plates with Bimodular Effect |
| title_short | Application of Variational Method to Stability Analysis of Cantilever Vertical Plates with Bimodular Effect |
| title_sort | application of variational method to stability analysis of cantilever vertical plates with bimodular effect |
| topic | variational method stability analysis cantilever vertical plate bimodular effect critical load |
| url | https://www.mdpi.com/1996-1944/14/20/6129 |
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